shuffle

Shuffle files in datastore

Syntax

shuffledADS = shuffle(ADS)

Description

shuffledADS = shuffle(ADS) creates a deep copy of the input datastore, ADS, and shuffles the files using randperm.

Examples

Shuffle Files

Create an audioDatastore object ADS. Shuffle the files to create a new datastore containing the same files in random order.

ADS = audioDatastore(fullfile(matlabroot,'toolbox','audio','samples'))

ADS = 
  audioDatastore with properties:

                       Files: {
                              ' .../build/matlab/toolbox/audio/samples/Ambiance-16-44p1-mono-12secs.wav';
                              ' .../matlab/toolbox/audio/samples/AudioArray-16-16-4channels-20secs.wav';
                              ' .../toolbox/audio/samples/ChurchImpulseResponse-16-44p1-mono-5secs.wav'
                               ... and 27 more
                              }
                     Folders: {
                              '/mathworks/devel/bat/Bdoc20b/build/matlab/toolbox/audio/samples'
                              }
    AlternateFileSystemRoots: {}
              OutputDataType: 'double'
                      Labels: {}
      SupportedOutputFormats: ["wav"    "flac"    "ogg"    "mp4"    "m4a"]
         DefaultOutputFormat: "wav"

ADSshuffled = shuffle(ADS)

ADSshuffled = 
  audioDatastore with properties:

                       Files: {
                              ' .../build/matlab/toolbox/audio/samples/SoftGuitar-44p1_mono-10mins.ogg';
                              ' .../build/matlab/toolbox/audio/samples/Engine-16-44p1-stereo-20sec.wav';
                              ' .../toolbox/audio/samples/ChurchImpulseResponse-16-44p1-mono-5secs.wav'
                               ... and 27 more
                              }
                     Folders: {
                              '/mathworks/devel/bat/Bdoc20b/build/matlab/toolbox/audio/samples'
                              }
    AlternateFileSystemRoots: {}
              OutputDataType: 'double'
                      Labels: {}
      SupportedOutputFormats: ["wav"    "flac"    "ogg"    "mp4"    "m4a"]
         DefaultOutputFormat: "wav"

Input Arguments

ADS — Input audio datastore

audioDatastore object

Input audio datastore, specified as an audioDatastore object.

Output Arguments

shuffledADS — Shuffled audio datastore

audioDatastore object

Shuffled audio datastore, returned as an audioDatastore object containing randomly ordered files from ADS.